Turning Technologies
of a Y axis, because some lathe tools like to turn a little above center or a little below center. That gave us CNC control of center so that we didn’t have to shim tools and could program or offset the height of the tool.
“But what’s really dramatic on mill/turn machines is a
The moment you realize that new requirements do not require new equipment. This is the moment we work for.
// MULTIFUNCTIONALITY MADE BY CARL ZEISS
B axis that rotates during turning. Rotating the B axis does several things for us. As we’re sweeping through convex or concave radii, we don’t change the point of tangency between workpiece and the cutting tool so that the point of tangency remains the same. This leads to some potentially dramatic advantages depending on the appli- cation. For example, the same great finishes and higher feed rates that wiper inserts produce on simple cylindrical surfaces and faces are now possible for complex surfaces. When the B axis is rotated, it keeps the wiper engaged with the workpiece,” said Hyatt.
“One of the elements that I find particularly exciting is the advent of five-axis turning.”
Two additional benefits of a rotating
Having both contact and optical scanning technology allows the new O-INSPECT 322 to do the work of a CMM, a microscope, a profile projector, and a contour measuring instrument. One machine for your inspection needs.
www.zeiss.com/metrology (800) 327-9735
B axis involve chip control and nozzle control in high-pressure coolant systems. “Insert chipbreakers are designed with the assumption that the chips are taking a certain path across that topography. As you change vector and swing through the radiuses, the engagement with the insert changes so that the vector and chip flow changes. The insert topogra- phy that may work on a cylindrical cut may not work on a facing cut or on the radius, leading to intermittent chip- control problems. When we rotate the tool with the B axis we keep the chips flowing across the topography of the in- sert as it was intended to so we take full advantage of the molded in or ground chipbreaker,” said Hyatt.
“This is also important to take advan- tage of high-pressure coolant to break chips. Coolant nozzles are aimed with an assumption of where chips will flow. Ro- tating the B axis to keep the tool normal
58
ManufacturingEngineeringMedia.com | July 2013
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